WEBVTT IPHONES. STEVE: HE BUILT A BOMB IN A RESTAURANT BOOTH LISTEN CLOSELY TO THIS. A MAN WAS ARRESTED LAST NIGHT FOR CONSTRUCTING A WORKING IED WHILE DINING AT A DOWNTOWN DES MOINES SUSHI PLACE. STACEY: POLICE SAY IVORY WASHINGTON DID IT AT AKEBONO DURING THE DINNER RUSH. KCCI’S HANNAH HILYARD TALKED TO THE RESTAURANT OWNER TODAY. HANNAH, THIS DEVICE COULD HAVE DONE SERIOUS DAMAG HANNAH: STACEY AND STEVE, HAD IT GONE OFF IT HAD TO POWER TO BE DEADLY. WE SPOKE TO THE RESTAURANT OWNER, AND HE SAYS HE NOTICED WASHINGTON ACTING A LITTLE OFF, BUT DID NOT EXPECT THIS. AKEBONO OWNER NAM TRAN, WAS BEHIND THE SUSHI BAR WEDNESDAY CREATING THE BEAUTIFUL DISH BUT IT WAS TUESDAY NIGHT, A CUSTOMER WAS SITTING IN A BOOTH BY THE WINDOW CREATING A DEVICE OF HIS OWN. >> I HAD NO IDEA. I HAD NO IDEA. HANNAH: A HOMEMADE HAND GRENAD DES MOINES POLICE SAY THAT CUSTOMER IS IVORY WASHINGTON. HE CALLED DISPATCH, TO TELL THEM HE WAS AT THE RESTAURANT MAKING THE DEADLY EXPLOSIVE. AT FIRST, HE CLAIMED IT WAS FAKE. >> IT WAS LEGIT. WE TESTED IT TO SEE IF IT WOULD EXPLODE. IT DID HANNAH SGT. PAUL PARIZEK SAYS : THE SUSPECT CLAIMED HE WANTED TO SEE IF ANYBODY WOULD NOTICE. >> HE GAVE US A STORY WHERE HE IS EXTREMELY FRUSTRATED WITH OUR WORLD TODAY AND BELIEVES THAT PEOPLE DON’T TAKE THESE TYPES OF THREATS SERIOUSLY. SO HE WAS GOING TO MAKE A POINT THAT HE COULD SIT SOMEWHERE AND CONSTRUCT A DEVICE AND HOPEFULLY, SOMEBODY WOULD CALL POLICE. HANNAH HE MAY HAVE ENDED UP : CALLIG POLICE HIMSELF, BUT WEDNESDAY HE DEFINITELY HAD GARNERED ATTENTION, AT THE RESTAURANT TRAN, AND OTHER EMPLOYEES SAY THEY NOTICED WASHINGTON ACTING STRANGE. >> HE KEPT WANDERING AROUND DIFFERENT TABLES, SIT DOWN. GO TO THE ELECTRIC OUTLET AND PLUG IN SOME DEVICE, A PHONE JACK OR SOMETHING. AND GO UP TO THE BAR A FEW TIMES AND ASK TO THROW SOME TRASH AWAY. HANNAH BUT NEVER EXPECTED THIS. : >> IF YOU SEE SOMETHING SUSPICIOUS, GIVE US A CALL BECAUSE HAD THIS DEVICE GONE OFF IN THAT RESTAURANT, ANYBODY THAT WAS INSIDE OF THAT RESTAURANT WOULD HAVE BEEN INJURED. HANNAH TRAN SAYS POLICE SPENT A : LOT OF TIME QUESTIONING WASHINGTON IN THE RESTAURANT, BUT THEY NEVER CLOSED. AND TODAY, IT’S BACK TO SUSHI-BUSINESS AS USUAL. >> NORMAL, WE’RE BACK TO BUSINESS. HANNAH WASHINGTON IS CHARGED : WITH POSSESSION OF AN EXPLOSIVE. HIS BOND IS CURRENTLY SET AT $25,000.

A 40-year-old man constructed a potentially deadly device while dining at a downtown Des Moines sushi restaurant because he didn’t think bomb threats were being taken seriously, authorities said Wednesday. Des Moines police said Ivory Washington made a legitimate improvised explosive device that resembled a homemade hand grenade Tuesday evening at Akebono at 215 10th St. If the device had gone off, Des Moines police Sgt. Paul Parizek said those within a 25-foot radius could have been injured and those within a 10-foot radius could have been killed. Parizek said Washington made the device in plain sight because “he is extremely frustrated with our world today and believes that people don’t take these types of threats seriously.” Washington “was going to make a point that he could sit somewhere and construct a device and, hopefully, somebody would call police,” Parizek said.The restaurant’s owner, Nam Tran, said he and other employees noticed Washington acting strangely, but the situation was unexpected. RELATED: Bomb threat sender remains elusive as police investigate Tran said he “had no idea” that there was a bomb in his restaurant. “(Washington) kept wandering around different tables,” Tran said. “(He would) go to the electric outlet and plug in some device, a phone jack or something, and go up to the bar a few times and ask to throw some trash away.” Washington eventually called police on himself, at first claiming that the device was fake. A bomb squad showed up, removed the device and determined the device was legitimate. Washington was then taken into custody without incident. “We tested it to see it if would explode. It did,” Parizek said. Police said they urge anyone to report suspicious activity. “Give us a call, because had this device gone off in that restaurant, anybody (who) was inside of that restaurant would have been injured,” Parizek said. Despite the ordeal, Tran said he didn’t close the restaurant, and the sushi restaurant returned to business as usual on Wednesday. Washington was taken to the Polk County Jail, where he is being held in lieu of $25,000 cash-only bail. He has been charged with possession of an explosive or incendiary material.

DES MOINES, Iowa (KCCI) —

A 40-year-old man constructed a potentially deadly device while dining at a downtown Des Moines sushi restaurant because he didn’t think bomb threats were being taken seriously, authorities said Wednesday.

Des Moines police said Ivory Washington made a legitimate improvised explosive device that resembled a homemade hand grenade Tuesday evening at Akebono at 215 10th St. If the device had gone off, Des Moines police Sgt. Paul Parizek said those within a 25-foot radius could have been injured and those within a 10-foot radius could have been killed.

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Parizek said Washington made the device in plain sight because “he is extremely frustrated with our world today and believes that people don’t take these types of threats seriously.”

Washington “was going to make a point that he could sit somewhere and construct a device and, hopefully, somebody would call police,” Parizek said.

The restaurant’s owner, Nam Tran, said he and other employees noticed Washington acting strangely, but the situation was unexpected.

Tran said he “had no idea” that there was a bomb in his restaurant. “(Washington) kept wandering around different tables,” Tran said. “(He would) go to the electric outlet and plug in some device, a phone jack or something, and go up to the bar a few times and ask to throw some trash away.”

Washington eventually called police on himself, at first claiming that the device was fake. A bomb squad showed up, removed the device and determined the device was legitimate. Washington was then taken into custody without incident.

“We tested it to see it if would explode. It did,” Parizek said.

Police said they urge anyone to report suspicious activity. “Give us a call, because had this device gone off in that restaurant, anybody (who) was inside of that restaurant would have been injured,” Parizek said.

Despite the ordeal, Tran said he didn’t close the restaurant, and the sushi restaurant returned to business as usual on Wednesday.

Washington was taken to the Polk County Jail, where he is being held in lieu of $25,000 cash-only bail. He has been charged with possession of an explosive or incendiary material.